UPDATE 3/06/20: It was one of my Best video downloaders. But You must pay to download the Highest quality video on the list. Even if the 720p is the highest, you can not download it. Recently I discovered other FREE online websites that can download 1080 full-HD or higher resolution videos! Such as: (https://ddownr.com/) and (https://loader.to/) and a software (https://televzr.com/) . So I have to removed it from my Addons to release space on my browser.
If you make this addon free again to download 1080, I will install it again. Thanks.